1 # /* ************************************************************************** 2 # * * 3 # * (C) Copyright Paul Mensonides 2002. 4 # * Distributed under the Boost Software License, Version 1.0. (See 5 # * accompanying file LICENSE_1_0.txt or copy at 6 # * http://www.boost.org/LICENSE_1_0.txt) 7 # * * 8 # ************************************************************************** */ 9 # 10 # /* See http://www.boost.org for most recent version. */ 11 # 12 # ifndef BOOST_PREPROCESSOR_SEQ_REST_N_HPP 13 # define BOOST_PREPROCESSOR_SEQ_REST_N_HPP 14 # 15 # include <boost/preprocessor/arithmetic/inc.hpp> 16 # include <boost/preprocessor/comparison/not_equal.hpp> 17 # include <boost/preprocessor/config/config.hpp> 18 # include <boost/preprocessor/control/iif.hpp> 19 # include <boost/preprocessor/facilities/identity.hpp> 20 # include <boost/preprocessor/logical/bitand.hpp> 21 # include <boost/preprocessor/seq/detail/is_empty.hpp> 22 # include <boost/preprocessor/seq/detail/split.hpp> 23 # include <boost/preprocessor/tuple/elem.hpp> 24 # 25 # /* BOOST_PP_SEQ_REST_N */ 26 # 27 # if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_EDG() 28 # define BOOST_PP_SEQ_REST_N(n, seq) BOOST_PP_SEQ_REST_N_DETAIL_EXEC(n, seq, BOOST_PP_SEQ_DETAIL_EMPTY_SIZE(seq)) 29 # else 30 # define BOOST_PP_SEQ_REST_N(n, seq) BOOST_PP_SEQ_REST_N_I(n, seq) 31 # define BOOST_PP_SEQ_REST_N_I(n, seq) BOOST_PP_SEQ_REST_N_DETAIL_EXEC(n, seq, BOOST_PP_SEQ_DETAIL_EMPTY_SIZE(seq)) 32 # endif 33 # 34 # define BOOST_PP_SEQ_REST_N_DETAIL_EXEC_NO_MATCH(n, seq) 35 # define BOOST_PP_SEQ_REST_N_DETAIL_EXEC_MATCH(n, seq) \ 36 BOOST_PP_TUPLE_ELEM(2, 1, BOOST_PP_SEQ_SPLIT(BOOST_PP_INC(n), BOOST_PP_IDENTITY( (nil) seq )))() \ 37 /**/ 38 # define BOOST_PP_SEQ_REST_N_DETAIL_EXEC(n, seq, size) \ 39 BOOST_PP_IIF \ 40 ( \ 41 BOOST_PP_BITAND \ 42 ( \ 43 BOOST_PP_SEQ_DETAIL_IS_NOT_EMPTY_SIZE(size), \ 44 BOOST_PP_NOT_EQUAL(n,size) \ 45 ), \ 46 BOOST_PP_SEQ_REST_N_DETAIL_EXEC_MATCH, \ 47 BOOST_PP_SEQ_REST_N_DETAIL_EXEC_NO_MATCH \ 48 ) \ 49 (n, seq) \ 50 /**/ 51 # 52 # endif 53